PlatformTransactionManager implementation that orchestrates transaction creation, commits and rollbacks to a
list of delegates. Using this implementation assumes that errors causing a transaction rollback will usually happen
before the transaction completion or during the commit of the most inner PlatformTransactionManager.

The configured instances will start transactions in the order given and commit/rollback in reverse order,
which means the PlatformTransactionManager most likely to break the transaction should be the last
in the list configured. A PlatformTransactionManager throwing an exception during commit will automatically
cause the remaining transaction managers to roll back instead of committing.